Thank You, unfortunately it's only one there is no more space :s
With her I have:
1 Datnoid
1 MM Stingray
1 Silver Arowana
1 Pacman Catfish
2 Gulpers
Have more fish in the grow-out but soon I'm gonna need an up-grade! hehe
She eats pellets nearly everyday (I give them to grow the datnoid faster), market prawn every 3 days and occasionally frozen fod. The Aro gets the 6 month occasional live treat.
Though I am not exactly experienced is CKs, I would say over 200 (maybe a bit smaller) is the minimum, though 300 gallon is better. However, people have kept them in smaller tanks, but 55 gallon is definitely to small for a fish that can reach 2+ feet in an aquarium.